KWM-37881 SERIES
8 x 8 Dot Matrix (3.7mm Dot)
LED Display
DESCRIPTION:
The KWM-37881 series is 38.00mm (1.496") height 8 x 8 dot matrix display.
This series is suitable for use in single/multi-line message display, large area
graphics display and electronic games.
All devices are available as either common row anode or common row cathode.
4.70*7=32.90(1.102)
38.0(1.496)
PACKAGE DIMENSIONS
COL 1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
PIN1
ABSOLUTE MAXIMUM RATINGS: (Ta=25 C)
Parameter
Max
Reverse Voltage per segment
5V
Reverse Current per segment (Vr = 5V)
100µA
Derating Linear from 25
o
C per segment
0.4mA/
o
C
Operating Temperature Range
-40
o
C To 85
o
C
Storage Temperature Range
-40
o
C To 100
o
C
Soldering Temperature 1.6mm(1/16") from body for 5 sec. at 260
o
C
NOTES : 1. All dimensions are in millimeters (inches).
2. Tolerance is +0.25mm(0.010) unless otherwise specified.
3. Specifications are subject to change without notice.
4. NP: No Pin.
5. NC: No Connect.
o
4.70*7=32.90(1.102)
38.0(1.496)
φ3.70(0.146)
ROW
10.3(0.406)
4.50(0.177)
2.54*7=17.78(0.700)
φ0.5(0.020)
28.20(1.110)
INTERNAL CIRCUIT DIAGRAM
ROW CATHODE
COL 1
ROW
PIN
NO.
9
14
8
12
1
7
2
5
PIN
NO. 13
ROW ANODE
3
4
2
3
4
10
5
6
6
11
7
15
8
16
COL 1
ROW
PIN
NO.
9
14
8
12
1
7
2
5
PIN
NO. 13
2
3
3
4
4
10
5
6
6
11
7
15
8
16
1
2
1
2
3
4
5
6
7
8
TESTING CONDITION FOR EACH PARAMETER :
Parameter
Forward Voltage
Peak Emission Wave Length
Spectral Line Half-Width
Reverse Current
Average Luminous Intensity
Symbol
Vf
λρ
∆λ
Ir
Iv
Unit
V
nm
nm
µA
µ
cd
Test Condition
If=20mA
If=20mA
If=20mA
Vr=5V
If=10mA
3
4
5
6
7
8
PART NO. SELECTION AND APPLICATION INFORMATION (RATINGS AT 25 C AMBIENT)
Chip
Part No.
Raw
Material
GaP
GaAsP/GaP
GaAlAs
GaP
GaP
GaAsP/GaP
GaP
Emitted
Color
Bright Red
Hi-Eff Red
Super Red
Green
Super Green
Yellow
Bright Red
Hi-Eff Red
Super Red
Green
Super Green
Yellow
Common
Cathode
Common
Anode
C.C
or
C.A
Wave
Length
λρ
(nm)
700
635
660
565
570
585
700
635
660
565
570
585
Absolute Maximum Ratings
∆λ
Pd
If
Electro-optical Characteristic
o
If
If
Vf (V)
Iv (µcd)
(Peak)
(Rec)
Per Dot
Per Dot
(nm) (mW) (mA) (mA) Min. Typ. Max. mA Min. Typ.
90
45
20
30
30
30
90
45
20
30
30
30
100
100
100
100
100
100
100
100
100
100
100
100
50
50
50
50
50
50
50
50
50
50
50
50
100
100
100
100
100
100
100
100
100
100
100
100
1.7
1.7
1.5
1.7
1.7
1.7
1.7
1.7
1.5
1.7
1.7
1.7
2.4
1.9
1.9
2.2
2.2
1.9
2.4
1.9
1.9
2.2
2.2
1.9
2.8 10-20 450
2.6 10-20 900
950
1800
KWM-37881A5
KWM-37881A3
KWM-37881AS
KWM-37881A2
KWM-37881AG
KWM-37881A6
KWM-37881C5
2.6 10-20 1600 3000
2.6 10-20 800
2.6 10-20 850
2.6 10-20 800
2.8 10-20 450
2.6 10-20 900
1700
1850
1700
950
1800
KWM-37881C3 GaAsP/GaP
KWM-37881CS
KWM-37881C2
KWM-37881CG
GaAlAs
GaP
GaP
2.6 10-20 1600 3000
2.6 10-20 800
2.6 10-20 850
2.6 10-20 800
1700
1850
1700
KWM-37881C6 GaAsP/GaP
REMARKS : 1. The average luminous intensity is obtained by summing the luminous intensity of each segment and dividing by the total number of segments.
2. Luminous intensity is measured with a light sensor and filter combination that approximates the CIE (International Commission on Illumination) eye-response curve.
3. Clean only by pure water, isopropanol, ethanol, Freon TF (or equivalent).
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